Means for treating yarn



ate 2?, 1931. P. G. RUST 1,829,678

MEANS FOR TREATING YARN Filed 2. 192a lNVENTOR PHILIP Q. RUST Patented Oct. 27, 1931 UNITED STATES fparmr OFF-ICE.

PHILIP e. RUST, or WILMINGTON, DELAWARE, AssIeNoR are THE VISCOSE COMPANY,

or MARCUS HOOK, DELAWARE, A

CORPORATION or PENNSYLVANIA MEANS FOR TREATING YARN Application filed August 2, 1928.-. Serial No. 297,075.

This invention was primarily made in connection with the manufacture of artificial silk or rayon by the wet method, the main object being to obtain a simple and efficient method of and means for freeing the thre'ad'in the process of manufacture from the excess of chemicals used in forming the thread- This particular form of washing or quenching, as itis technically called in the factory, takes place as the thread or yarn passes onits way from the forming bath to the spinning box.

Thereare various ways in which threads or yarns may be so washed or quenched. For example, one way would be to run in a trough of water the godet or a reel on which the yarns are Wound, but that is open to the objection that that will require several extra 4 thread guides, and practice has shown that culty; is experienced in starting the ope-ra- I tion.

' the thread there to the action Another possible method of washing or quenching would consist in dripping the washing liquid onto the top of the revolving godet, but that method is not satisfactory because ofthe resulting spray, .and experience has demonstrated that the .washing so carriedjon is not uniform. I

"Ihave found that the thread or yarn can be easily but efficiently washed by causing it to pass around a fixed guide, and subjecting of a stream of Water'or other liquid. For this purpose I use a hollow guide, through which the washingliquid is supplied and allowed to flow out of an opening in the guide and to flood the thread or yarn it passes about the guide.

In the accompanying drawings I have shown how my invention may be applied and carried out in connection with the spinning of artificial silk or rayon by the wet process, but my inventionmay be applied in'other connections and operations, as for example with that arrangement, considerable difli of a revolving godet with a forni of my improved thread guide; Fig. is a corresponding face view of the same parts; Fig.3 is a plan view of the thread guide; Figs. 4 and 5 are plan and sectional views of a modified form of thread guide. In Figs. 1 and 2, G represent-s a godet mounted to revolve in a bearing 9 carried by the fixed frame F of a machine for forming and spinning artificial silk or rayon by the wet process. At X I have indicated the thread coming from theforming bath and passing in three turns, 1, 2, 3, around the godet and passing on its way at Y towards the spinning box, not'shown. The thread on itsway to the first turn 1 is shown as guided by one of the fingers of a fork H, andthen on itsway to the second turn'2 is shown as guided byanother part of the same fork. on leaving the second turn 2, the thread is passed around a notch a on the underside of what I term a flooding thread guide A, which in this instance is shown asmounted in a position below the godet G. There the thread is washed or quenched as I will describe, and thence the thread is shown as passing once more around the godet at 3 and then down at Y towards the spinning box below.

The flooding thread guide A is made hollow with means for admitting water or other liquid to the interior, and near its outer end there is provided an outlet a for the liquid that groove. In the drawings I have shown this outlet a as on the upper side of the tube of the guide near the outer end of the tube which is closed, and the tube itself is so mounted in the frame F as to stand in a tilted position with its outer end higher than its inner end; Consequently the water or other washing liquid will flow down the outside of the tube in a stream as indicated in Fig. 1, thoroughly flooding the thread on the way.

Any suitable arrangements may be made for supplying a stream of washing fluid to each guide A, which, by the way, may be made convenientlyof glass or porcelain or even of 7 metal or'a' composition which; will ,not be in jured by, and 'will' not injure, the ehemicals coming in contact with it.- 7 V I In the form illustrated in Figspxl to-3, I"

have shown the tube A as provided with an V inlet branch Z) to which flexible hose maybe a connected. "In this case the back end of the V 7 v tube 111 be Closed. u

v m In the form shown in 4-2andx5the;

' a1'ranged ,"in any other convenientfposition;

vguide A is Iopengat theibaek end to admit there the supply of washing fluid.

Althoughlhave shown thefl oding thfeadl guide as arranged under the godet it maybe and-in Connection with any other suitable whee1', ree1 oi' bobbin; g I T, I regardit as-asurp ising discoverytorfind that such a shortcontact of the thread with j 2 0 vthe-liquid producessuch an efficient washing and cleansingleffect. I attribute this effif 'eiency'largely to the fact that, the thread as it passes around the thread guide is under suffieient tension to flattenthere, thus expos- 5 ingthe individual filaments more completely to the action of the stream ofliquid.

L Ic'laimas my invention i 1; Aitubul'ar, thread 'guide With an outlet 01 liquid on its-upper side, and a thread de} 30 pression on ts undeiifside adapted to contact 4e name to thisspecificationfi with the threadfandf to be flooded by flowing I} liquid. r f V, v, j" E- f V 2. A tubular thread guide adapted to be V mounted in a tilted positi'on with, oi ter. end

up, saidoutef'en'd being provided with an H outlet fortheliquid, andthe undei sideiof the" tube-beil igproyided with a thread depression towardsl'thefinner end-of the guide; N i

In testimony whereof'I haue signedimy I 

